Surah Al-Isra' (The Night Journey), Verse 5

فَاِذَا جَآءَ وَعْدُ اُوْلٰىهُمَا بَعَثْنَا عَلَیْكُمْ عِبَادًا لَّنَاۤ اُولِیْ بَاْسٍ شَدِیْدٍ فَجَاسُوْا خِلٰلَ الدِّیَارِ وَكَانَ وَعْدًا مَّفْعُوْلًا ۟

Fa-izaa jaaa'a wa'duoolaahumaa ba'asnaaa 'alykum 'ibaadal-lanaaa ulee baasin shadeedin fajaasoo khilaalad diyaar; wa kaana wa'dam maf'oolaa

“When the first of the warnings came to pass, We sent against you Our servants given to terrible warfare: They entered the very inmost parts of your homes; and it was a warning (completely) fulfilled.”

Quran 17:5 (Yusuf Ali Translation)